Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Nobuyuki Hiratsuka"'
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 61:S314-S317
Publikováno v:
Journal of Applied Physics; Jan2011, Vol. 109 Issue 1, p013904, 5p, 1 Diagram, 2 Charts, 6 Graphs
Autor:
Koichi Kakizaki, Kenji Kamishima, Nobuyuki Hiratsuka, Kowashi Watanabe, Atsuhiro Fujimori, Ryumon Tajima, Masamichi Sakai
Publikováno v:
Transactions of the Materials Research Society of Japan. 38:451-454
We have investigated the synthesis conditions and the magnetic properties of a new U-type hexaferrite, Ba4Cu2Fe36O60(Cu2U). The samples were prepared by a conventional ceramic method. We used BaCO3, CuO, and α-Fe2O3 as starting materials. They were
Autor:
Nobuyuki Hiratsuka
Publikováno v:
Journal of the Magnetics Society of Japan. 37:141-146
Autor:
Yasutaka Imanaka, Kenji Kamishima, Koichi Kakizaki, Takashi Tokue, Daisuke Miyata, Y. Sato, T. Noda, F. Kadonome, Tadashi Takamasu, Nobuyuki Hiratsuka
Publikováno v:
Journal of Magnetism and Magnetic Materials. 324:1106-1111
We have prepared pyrolytic carbon samples from triethylamine on diamond powder in applied magnetic field of 6 T and investigated their magnetic properties. A ferromagnetic sample was obtained from the pyrolysis products even at room temperature, with
Publikováno v:
Transactions of the Materials Research Society of Japan. 37:271-274
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 59:337-341
Publikováno v:
Transactions of the Materials Research Society of Japan. 37:267-270
Autor:
Yoshihiro Ishimaru, Kenji Kamishima, Koichi Kakizaki, Nobuyuki Hiratsuka, Kyohei Kono, Masamichi Sakai
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 58:334-339
Nano-crystalline NiFe2O4 (NF) powder was prepared by a sol-gel auto-combustion method. Its crystal structure, morphology, particle size and magnetic properties were investigated and the formation process of nano-crystalline NF was elucidated. The as-
Publikováno v:
Journal of the Japan Society of Powder and Powder Metallurgy. 57:809-813
The conventional synthesis of ferrite compounds consists of two-steps sintering processes. The first process is calcination to produce precursor of a desired ceramic object, and the second is to obtain the desired object.However, it was difficult to